131504503 has 8 divisors (see below), whose sum is σ = 149951088. Its totient is φ = 114248064.

The previous prime is 131504489. The next prime is 131504509. The reversal of 131504503 is 305405131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131504503 - 2⁹ = 131503991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131504509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297301 + ... + 297742.

It is an arithmetic number, because the mean of its divisors is an integer number (18743886).

Almost surely, 2^131504503 is an apocalyptic number.

131504503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131504503 is a deficient number, since it is larger than the sum of its proper divisors (18446585).

131504503 is a wasteful number, since it uses less digits than its factorization.

131504503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595073.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 131504503 is about 11467.5412796292. The cubic root of 131504503 is about 508.5264436835.

Adding to 131504503 its reverse (305405131), we get a palindrome (436909634).

The spelling of 131504503 in words is "one hundred thirty-one million, five hundred four thousand, five hundred three".